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https://github.com/scylladb/scylladb.git
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35dd3edb9e
Currently, big_decimal(0) will select the big_decimal(string_view) constructor (via 0 -> const char* -> string_view conversions). 0 is important for initializing aggregates, so fix it ahead of using it.
59 lines
2.0 KiB
C++
59 lines
2.0 KiB
C++
/*
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* Copyright (C) 2015-present ScyllaDB
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*/
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/*
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* SPDX-License-Identifier: AGPL-3.0-or-later
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*/
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#pragma once
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#include "multiprecision_int.hh"
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#include <boost/multiprecision/cpp_int.hpp>
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#include <ostream>
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#include <compare>
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#include <concepts>
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#include "bytes.hh"
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uint64_t from_varint_to_integer(const utils::multiprecision_int& varint);
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class big_decimal {
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private:
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int32_t _scale;
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boost::multiprecision::cpp_int _unscaled_value;
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public:
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enum class rounding_mode {
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HALF_EVEN,
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};
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explicit big_decimal(sstring_view text);
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big_decimal();
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big_decimal(int32_t scale, boost::multiprecision::cpp_int unscaled_value);
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big_decimal(std::integral auto v) : big_decimal(0, v) {}
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int32_t scale() const { return _scale; }
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const boost::multiprecision::cpp_int& unscaled_value() const { return _unscaled_value; }
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boost::multiprecision::cpp_rational as_rational() const;
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sstring to_string() const;
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std::strong_ordering compare(const big_decimal& other) const;
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big_decimal& operator+=(const big_decimal& other);
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big_decimal& operator-=(const big_decimal& other);
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big_decimal operator+(const big_decimal& other) const;
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big_decimal operator-(const big_decimal& other) const;
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big_decimal div(const ::uint64_t y, const rounding_mode mode) const;
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friend bool operator<(const big_decimal& x, const big_decimal& y) { return x.compare(y) < 0; }
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friend bool operator<=(const big_decimal& x, const big_decimal& y) { return x.compare(y) <= 0; }
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friend bool operator==(const big_decimal& x, const big_decimal& y) { return x.compare(y) == 0; }
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friend bool operator!=(const big_decimal& x, const big_decimal& y) { return x.compare(y) != 0; }
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friend bool operator>=(const big_decimal& x, const big_decimal& y) { return x.compare(y) >= 0; }
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friend bool operator>(const big_decimal& x, const big_decimal& y) { return x.compare(y) > 0; }
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};
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inline std::ostream& operator<<(std::ostream& s, const big_decimal& v) {
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return s << v.to_string();
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}
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